If by darkroom you mean conventional film and paper processes, then I'd say there is very little not covered in David's list. I think Ansel's "The print" and "The negative" are a good place to start. I like Tim Rudman's explanation of flashing techniques etc. I like Way Beyond Monochrome for the practical explanation of variable contrast printing etc. Ansel's series cover mid to late 20th century materials and techniques, but there are newer materials and techniques that do not fit exactly to his way of doing things. But I must state that knowing his theory and points of departure can absolutely do no harm. It is just that there are a few newer things also to learn.

The "Cookbooks" by Anchell et al. are very, very useful. I have heard good things said about David Vestal's books. I personally have and like John Blakemore's "Black and White Photography Workshop". It gives a very easy to follow and very practical explanation of optimising exposure and development, with many beautiful images to support the theory.

If you are into alternative stuff, then Christopher James is the ultimate single resource. There are of course others, but none so complete in a single volume.

I'd second a lot of the books above. I'd also like to add David Vestal's books. 'The Craft of Photography' and 'The Art of Black and White Enlarging'. They are a bit more basic and less inspiring than McClean's or Rudman's books, but they are very well written and cover the basics in a thorough fashion, more so than Horenstein in my opinion. Some of the info is a little out of date. However, this is all offset by the fact that you can pick them up for about $1 a piece used. Check Amazon.

All good choices which will serve you well ...my first darkroom book was the Darkroom Handbook by Michael Langford way back in 1984 . Once upon a time there was light in my life, now there's only love in the dark! Silver Footprint by Robin Bell ( Argentum Press) is another more recent book.

"He took to writing poetry and visiting the elves: and though many shook their heads and touched their foreheads and said 'Poor old Baggins!' and though few believed any of his tales, he remained very happy till the end of his days, and those were extraordinarily long "- JRR Tolkien, ' The Hobbit '.

After absorbing Ansel’s books “The Negative” and “The Print”, I think the best source on using current materials is “Way Beyond Monochrome, 2nd ed.”. Another excellent current reference is “The Ansel Adams Guide – Basics Techniques of Photography, Book 2 by John P. Schaefer” (paperback, 386 pp.).